Question about 1999 Pontiac Grand Am GT

1 Answer

1.6 Automatic Jumps When Accelerating From Rest - GB Oil Prob?

Over the past few weeks the car has been 'jumping' when accelerating from a rest position e.g. when stopping at a junction or at traffic lights the acclerating but drives fine once a constant speed is maintained. The map sensor and vac pipes have been checked and cleaned. I've been told the gearbox oil needs replacing? Will that solve the problem?
My grand am accelerates poorly from a stop and jumps at about 20 mph and to a less degree at 40mph. This is worse when car is cold and gets better when diven for a while. The car also shakes around 60-70 mph, not sure if this is related or not. I did rotate and balance, but no difference.

Posted by on

  • pglayden3 Apr 03, 2009

    2001 Pontiac Grand Am - Jumps/kicks into gear at low speeds, fine at higher speeds.... Also the car continuously stalls at low (less than 10 mph) speeds.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 12 Answers

Your transmission is gone... i had the same problem.. be carfull you may loose first gear.... check your fluid level.. that might cause it... to do that you have to worm up the tranny then there is a square head bolt on bottom side off passenger side... leave car running. pull the bolt and keep an oil pan underneath... that happened to me. i left it for to long and ended up blowing the tranny. i got a rebuild and i was told i had too much fluid. i hope that helps..

Posted on Nov 27, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I changed my engine block and replaced the rings and bearings but the car is smoking and using oil


  • Smoke and abnormal oil use means the car is burning oil.

    If you get smoke when accelerating hard (eg from rest or in high gear when overtaking) it means the oil is getting past the piston rings which indicates worn bores, pistons and/or piston rings.

    If the smoke appears after an over-run* it points to worn valve guides, valves or faulty valve stem seals.

    *over run = for example when you descend a hill in gear but with foot off the accelerator. The engine is acting as a kind of brake. The smoke billows out when you accelerate.

Jun 03, 2014 | 1995 Opel Kadett 200is

1 Answer

Car jumps when accelerating


hello Carolyn
what car, a jeep GC, sure, but what year, and what engine size.
jumps. (ill assume engine jumps and not transmission slips)
the engine can jump or many types of reasons, failures. 50 or more.
i guess you what us to guess, and not do tests and find true cause?
1: failure to do the service on the car is the all time top #1 reason.
spark plugs, and filters stop this list. every 60k miles or as the operators guide in the glove box states.
2: bad fuel. (or wrong fuel)
3: Bad TPS sensor.
4: low fuel pressure.
5: engine intake air leaks. (vacuum leaks)
6: bad MAF or MAP sensor,
7: ASD relay dropping out, for a second due to 7 errors it sees. ask.
8: 12vdc battery power dropping out for any reasons, (many)


May 16, 2014 | Jeep Grand Cherokee Cars & Trucks

1 Answer

Transmmision jumps


Our 97 ford wind star would jump after coming to a complete stop...i found a hose that sit on the manafold was off.....(look On top Or in Back) problem solved

Feb 25, 2014 | 1997 Ford Windstar

1 Answer

Car jumping during gear change


Several possible causes.
1.Erattic or high line pressure
2.Electrical fault at solenoids (EV5 on 01N, 01M and01P boxes)
3.Hydraulic malfunction with same solenoid

Nov 30, 2012 | Cars & Trucks

1 Answer

1996 Ford Explorer vibrates when idling. Also have noticed that when I go 80 mph, it "jumps" every few seconds. Like it skips a beat. I don't know how to explain it but it seams to "stall" like if you were...


You have a hesitation. A hesitation is cause be either:
1. bad spark plug
2. bad spark plug wire
3. bad or leaky or plugged injector
4. timing is off
5. leaky vacuum hose

Mar 04, 2009 | 1996 Ford Explorer

1 Answer

After bout 45min it stops accelerating


Change your dist. cap heat exspanion crack{ crack closed when cool opens when hot, jumps sparks
inside the cap. remember your fireing order write it down see ya.
leroy

Dec 18, 2008 | 1992 Cadillac DeVille

1 Answer

1992 Saturn SL1 jerks and jumps when accelerating


did you try to replace your transmition filter.....

Aug 04, 2008 | 1992 Saturn SL

Not finding what you are looking for?
1999 Pontiac Grand Am GT Logo

592 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

60792 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...